CQRS in full
On This Lesson 4 topics
This lesson is planned. The outline below lists the topics it will cover. The full lesson has not been published yet.
In this lesson
separate the write model from the read model when their needs really differ.
Planned topics
- Command side protects invariants; query side is shaped for screens and reports.
- CQRS-lite: same database, separate classes or views; often enough.
- Full CQRS: separate stores kept in sync by events; reads are eventually consistent.
- Use full CQRS when read load, shape, or scaling differs sharply from writes.
Draft outline details
Demonstration
a diagram: commands -> aggregate -> write DB -> outbox -> events -> projector -> read store (search or denormalized tables) -> query API. Beside it, the CQRS-lite version with a SQL view.
Check your understanding
When is CQRS-lite enough?
Show answer
When one database can serve both sides within latency and scale needs; only the code is separated.
Practice
Apply this lesson with the module's lab, exercises and quiz.
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